JoVE Core 视频在线看

27.1:  What is an Ecosystem?

27.2:  Trophic Levels

27.3:  Primary Production

27.4:  Production Efficiency

27.5:  Trophic Efficiency

27.7:  The Water Cycle

27.8:  The Carbon Cycle

27.11:  The Sulfur Cycle

28.2:  Distribution and Dispersion

28.3:  Life Histories

28.4:  Energy Budgets

29.8:  What is Climate?

29.2:  Global Climate Change

30.1:  What is a Species?

30.2:  Formation of Species

30.3:  Speciation Rates

31.2:  Types of Selection

31.3:  Frequency-dependent Selection

32.2:  Hardy-Weinberg Principle

32.3:  Mutation, Gene Flow, and Genetic Drift